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Colloquia Archive

All Scheduled Events

July, 07/24/2014
Events and times subject to change

July 30, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Chris Russo

Modifying Graphene with Low-energy Plasmas for Imaging Proteins in a Transmission Electron Microscope

Graphene is an ideal substrate for imaging single molecules in a transmission electron microscope, but its hydrophobic nature precludes reliable protein deposition and has prevented its widespread adoption in electron cryomicroscopy (cryo-EM). We have developed a simple yet robust method of modifying graphene using a low-energy hydrogen plasma so it is suitable for use with biological molecules. The method removes surface contaminants and reduces graphene hydrophobicity without degrading the substrate lattice. We use a custom chemical vapor deposition to synthesize large quantities of graphene and use it to make suspended graphene substrates. We then modify the suspended graphene using low-energy plasma treatment to allow control of protein surface distribution in ice for cryo-EM. This enables the systematic screening of surfaces for protein adsorption. We show examples of controlled protein adsorption on graphene using a range of different protein complexes, including 70S ribosomes, 80S ribosomes, 20S proteasomes and apoferritin. We demonstrate the use of graphene in high-resolution structure determination by cryo-EM and show that it consistently reduces the radiation-induced motion of individual protein complexes, thus improving the structural information content in each micrograph.


September 3, 2014 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Csaba Csaki
Cornell

TBA



September 4, 2014 Thursday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Ronojoy Adhikari

TBA



September 10, 2014 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


Duccio Pappadopulo
UC Berkeley

TBA



September 10, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


William Irvine
University of Chicago

TBA



September 12, 2014 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Andy Fruchter
STScI

TBA (GRB hosts)



September 17, 2014 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


David Gross
UCSB

TBA

Date reserved/to be confirmed by the speaker.


September 17, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Erwin Frey
Ludwig-Maximilians University

TBA



September 18, 2014 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


David Gross
UC Santa Barbara

TBA



September 24, 2014 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


David Gross
UCSB

TBA

Date reserved/to be confirmed by the speaker.


September 24, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Petia Vlahovska

TBA



September 25, 2014 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Omar Hurricane
Lawrence Livermore National Laboratory

TBA



October 1, 2014 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


David Gross
UCSB

TBA

Date reserved/to be confirmed by the speaker.


October 2, 2014 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Frank Shu
University of California

TBA



October 3, 2014 Friday 12:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Frank Shu
Univ. Calif.

Spiral Density Wave Theory



October 8, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Wilson Poon
University of Edinburgh

TBA



October 9, 2014 Thursday 4:00 PM  +
Meyer 122
Physics Colloquia (colloquia)


Nathan Seiberg
Institute for Advanced Study

TBA



October 10, 2014 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Luc Dessart
LAM (Marseille, France)

TBA (SN)



October 17, 2014 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Jason Kalirai
STScI

TBA (stellar clusters)



October 20, 2014 Monday 11:00 AM  +
Meyer 5th Fl. CCPP Lounge
Experimental Particle Physics Seminars (hep-ex)


Ning Zhou
UC Irvine

Dark matter searches at ATLAS



October 20, 2014 Monday 12:30 PM  +
Meyer 5th Fl. CCPP Lounge
Other CCPP (ccpp)

CCPP Brown Bag



October 22, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Kurt Kremer
Max Planck Institut

TBA



October 24, 2014 Friday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
Astrophysics and Relativity Seminars (astro)


Paul Sutter
Institut d'Astrophysique de Paris

TBD



November 5, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Gi-Ra Yi
Korea Basic Science Institute

TBA



November 12, 2014 Wednesday 2:00 PM  +
Meyer 5th Fl. CCPP Lounge
High Energy Physics Seminars (hep)


John Terning
UC Davis

TBA



November 19, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Damon Clark

TBA



December 3, 2014 Wednesday 2:00 PM  +
Meyer 6th Floor Conference Room
Soft Condensed Matter Seminars (csmr)


Maxime Clusel

TBA